| 摘要 |
PURPOSE:To reduce vibration by discharging the drain sucked from the lower end of an inverted conical casing from the upper end thereof, and by forming communicating holes for passing drain in the upper parts of vanes. CONSTITUTION:Inverted triangular flat-plate-shaped rotary vanes 4 are connected to the lower end of a motor 2, and also a casing 5 of a nearly inverted conical shape is provided. A drain suction port 6 is provided to the lower end of the casing 5, and a discharge port 7 is also provided to the outer-circumferential upper end part thereof. Communicating holes 8 are provided to the respective vanes 4 for equalizing the volume of drain water in respective chambers partitioned by the rotary vanes, thus the vibration at the time of suction operation can be reduced. |
